I'd heard that it was just mild symptoms. Obviously I don't wish harm on anyone, not even Johnson or Trump (just about, in the case of Trump as his existence is a serious danger to others).
This may turn out to be a good thing in that people may take it more seriously now. That isn't me having a dig at Johnson but saying it could help, oddly enough. Also shows no one is safe, no matter what their position, wealth or social status.